Interestingly there are oscillations in the effective proton form factor,
first seen by BaBar and later confirmed by BESIII [1]}.
These oscillations were subsequently studied with more precise data
by BESIII [2]}.
Ref. [3]} speculated that possible origins of this
curious behavior are rescattering processes at relative distances
of 0.7 - 1.5 fm between the centers of the forming hadrons, leading
to a large fraction of inelastic processes in \(p-\bar{p}\)  interactions,
and a large imaginary component to the rescattering processes.
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